{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:43.252846", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2011-Feb-02_to_2011-Feb-05_41.5_39.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2011020000235}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "February 02 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 64870.966804964846}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Georgia", "Iraq", "Turkiye"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 39.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 41.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 38.47], [42.25, 39.0], [42.47, 39.53], [43.0, 39.75], [43.53, 39.53], [43.75, 39.0], [43.53, 38.47], [43.0, 38.25], [42.47, 38.47]]], [[[42.03, 40.53], [42.25, 40.0], [42.15, 39.75], [42.25, 39.5], [42.03, 38.97], [41.5, 38.75], [40.97, 38.97], [40.75, 39.5], [40.85, 39.75], [40.75, 40.0], [40.97, 40.53], [41.5, 40.75], [42.03, 40.53]]], [[[42.5, 42.25], [42.75, 42.15], [43.0, 42.25], [43.53, 42.03], [43.68, 41.68], [44.03, 41.53], [44.25, 41.0], [44.03, 40.47], [43.5, 40.25], [43.25, 40.35], [43.0, 40.25], [42.47, 40.47], [42.32, 40.82], [41.97, 40.97], [41.75, 41.5], [41.97, 42.03], [42.5, 42.25]]]]}, "2011-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 39.0], [40.47, 39.53], [40.82, 39.68], [40.85, 39.75], [40.75, 40.0], [40.97, 40.53], [41.5, 40.75], [41.75, 40.65], [41.82, 40.68], [41.96, 41.0], [41.75, 41.5], [41.97, 42.03], [42.5, 42.25], [42.75, 42.15], [43.0, 42.25], [43.53, 42.03], [43.68, 41.68], [44.03, 41.53], [44.25, 41.0], [44.03, 40.47], [43.68, 40.32], [43.65, 40.25], [43.75, 40.0], [43.65, 39.75], [43.75, 39.5], [43.65, 39.25], [43.75, 39.0], [43.57, 38.57], [44.0, 38.75], [44.53, 38.53], [44.75, 38.0], [44.53, 37.47], [44.18, 37.32], [44.04, 37.0], [44.25, 36.5], [44.15, 36.25], [44.25, 36.0], [44.03, 35.47], [43.5, 35.25], [42.97, 35.47], [42.75, 36.0], [42.85, 36.25], [42.82, 36.32], [42.75, 36.35], [42.5, 36.25], [41.97, 36.47], [41.75, 37.0], [41.85, 37.25], [41.75, 37.5], [41.85, 37.75], [41.82, 37.82], [41.75, 37.85], [41.5, 37.75], [40.97, 37.97], [40.82, 38.32], [40.47, 38.47], [40.25, 39.0]]]]}, "2011-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, 39.0], [40.47, 39.53], [40.82, 39.68], [40.85, 39.75], [40.75, 40.0], [40.97, 40.53], [41.5, 40.75], [41.75, 40.65], [41.82, 40.68], [41.96, 41.0], [41.75, 41.5], [41.97, 42.03], [42.5, 42.25], [42.75, 42.15], [43.0, 42.25], [43.53, 42.03], [43.68, 41.68], [44.03, 41.53], [44.25, 41.0], [44.03, 40.47], [43.68, 40.32], [43.65, 40.25], [43.75, 40.0], [43.65, 39.75], [43.75, 39.5], [43.65, 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"description": "The daily evolution of maximum t2m.", "value": [-15.260589457564606, -17.956142051756927, -16.693782690051478, -16.14414327971093]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.882023870161512, -6.8430377250626595, -6.645214557758986, -6.349851709322977]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.881412966013272, -11.10166603347406, -8.938555856847529, -8.041415455121523]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5111374414837448, -1.7550501277438924, -1.7098914613075773, -1.605938227696673]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6128531196530347, -2.3700161416922567, -1.999390849627049, -1.9157494142660554]}}